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  1. R

    mp830 pgblk not working, purge unit seems ok

    The last set of ink cartridges I purchased was this one: They are listed as "Canon PGI-5BK CLI-8 15-Pack Compatible Ink Cartridges w/ Chip for Pixma MP500 MP530 MP600 MP800 iP4200 iP4300 iP4500 iP5200 iP5200" from a firm called "compatible" listed on amazon. I don't see any markings on the...
  2. R

    mp830 pgblk not working, purge unit seems ok

    Thanks very much for the responses. I was afraid it might be more than just a clogged or mis-functioning print-head, ie the logic board you referred to. To answer post #2, I used a new pigment black cartridge in my tests. If I change the text to be printed to red, for example, it does print...
  3. R

    mp830 pgblk not working, purge unit seems ok

    Hello- I have a lightly used MP830 that has suddenly stopped printing on the pigment black. After reading quite a few postings on this helpful site I tested the performance of the purge unit by dripping windex onto the left-most pad, and observed that it would drain after the print head was...
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